This is where I am now. I'm a rank newbie; I got a Hohner 20-button on Ebay before I knew any better and am teaching myself to play it (with an eye toward playing for English country dance and morris eventually), but it took me very little time indeed to figure out I'd want something better right quick. I'm in much the same position as the Bear (though I don't plan on selling my cheap concertina until I have its replacement in hand). Next for me is a 30-button C/G Anglo, and I'm not yet prepared to pay for a vintage or high-end modern instrument. From reading this thread and other things on this site and elsewhere, it looks like my choices are:
A Rochelle, once they become available next month.
A Stagi (from the Button Box, properly overhauled and tested).
A Morse Ceili, a Herrington, a Tedrow or something else in that range.
Has anyone had access to a pre-production Rochelle, or can people only guess how it will be based on the quality of the Jack and the Jackie? How is it likely to compare to a Stagi? If I'm able to pay the price of a Morse (I live in Massachusetts, so it seems a better choice to drive to Sunderland than to correspond with Homewood or Rowlett), am I likely to be better off with that than with a cheaper instrument?
No doubt this will all come down to a favorite saying of my mother's: "Only you can decide." Nevertheless, I'd be glad of the benefit of your experience.